Observed 1:55 PM MDT at KSPF

Mountain Plains, SD weather

Sunny and 48°9°.

Forecasts agree

Now 48°9°

Sunny · Feels like 45°7°

Wind: 7 mph11 km/h; From the northwest. Up to 7 mph11 km/h through 2 AM
Dew point: 7°−14°; Dry · up to 15°−9° by 10 PM
UV index: 3Moderate; Moderate until 4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

29°16° cooler than this time yesterday (77°25° then, 48°9° now)

Good hours for

Dry until 6 AM tomorrow
Rain tomorrow 6 AM–noon (30%, 0.18 in4.6 mm)
Low 36°2° tomorrow at 7 AM
Dry break tomorrow noon–6 PM
Rain tomorrow night from 6 PM (80%, 0.92 in23 mm)

This afternoonNear 45°7° · Partly cloudy
TonightDown to 37°3° by 3 AM · Mostly cloudy
Tomorrow morningUp to 42°6° by 11 AM · Rain all morning (30%)
Tomorrow afternoonNear 43°6° · rain chance 20% · Cloudy
Tomorrow nightDown to 35°2° by 4 AM · Rain all night (80%)
Monday morningUp to 37°3° by 11 AM · Rain all morning (80%)

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 2p	Sunny	46°8° (likely 46°8° to 48°9°)	44°7°	0%	5 mph8 km/h from NW, gusts 7 mph11 km/h	27%	0%	4
Sat 3p	Sunny	46°8° (likely 46°8° to 48°9°)	44°7°	0%	5 mph8 km/h from NW, gusts 7 mph11 km/h	26%	0%	3
Sat 4p	Cloudy	46°8° (likely 45°7° to 48°9°)	44°7°	0%	5 mph8 km/h from N, gusts 7 mph12 km/h	26%	62%	2
Sat 5p	Cloudy	44°7° (likely 43°6° to 46°8°)	41°5°	0%	5 mph8 km/h from E, gusts 10 mph16 km/h	28%	65%	1
Sat 6p	Cloudy	42°6° (likely 41°5° to 43°6°)	38°3°	0%	6 mph10 km/h from E, gusts 12 mph20 km/h	30%	69%	0
Sat 7p	Cloudy	41°5° (likely 39°4° to 42°6°)	37°3°	0%	6 mph10 km/h from SE, gusts 10 mph16 km/h	31%	72%	0
Sat 8p	Cloudy	41°5° (likely 38°3° to 42°6°)	37°3°	0%	6 mph10 km/h from SE, gusts 10 mph16 km/h	33%	76%	0
Sat 9p	Cloudy	41°5° (likely 38°3° to 41°5°)	37°3°	0%	6 mph10 km/h from SE, gusts 8 mph13 km/h	33%	78%	0
Sat 10p	Partly cloudy	40°4° (likely 37°3° to 40°4°)	37°3°	0%	5 mph8 km/h from SE, gusts 6 mph9 km/h	36%	74%	0
Sat 11p	Cloudy	39°4° (likely 37°3° to 40°4°)	36°2°	0%	5 mph8 km/h from SE, gusts 5 mph8 km/h	37%	75%	0
Sun 12a	Cloudy	38°3° (likely 35°2° to 39°4°)	36°2°	5%	3 mph5 km/h from SE, gusts 4 mph7 km/h	40%	72%	0
Sun 1a	Clear	38°3° (likely 34°1° to 39°4°)	38°3°	5%	2 mph3 km/h from SE, gusts 4 mph7 km/h	40%	36%	0
Sun 2a	Cloudy	38°3° (likely 33°1° to 40°4°)	38°3°	5%	2 mph3 km/h from SE, gusts 6 mph9 km/h	40%	75%	0
Sun 3a	Cloudy	37°3° (likely 33°1° to 39°4°)	37°3°	5%	2 mph3 km/h from SE, gusts 3 mph5 km/h	44%	70%	0
Sun 4a	Cloudy	37°3° (likely 32°0° to 39°4°)	37°3°	5%	1 mph2 km/h from S, gusts 3 mph5 km/h	46%	63%	0
Sun 5a	Cloudy	37°3° (likely 32°0° to 40°4°)	37°3°	5%	2 mph3 km/h from S, gusts 4 mph6 km/h	48%	70%	0
Sun 6a	Cloudy	37°3° (likely 33°1° to 40°4°)	37°3°	30%, 0.03 in0.8 mm	2 mph3 km/h from E, gusts 4 mph7 km/h	50%	97%	0
Sun 7a	Cloudy	36°2° (likely 34°1° to 41°5°)	36°2°	30%, 0.03 in0.8 mm	2 mph3 km/h from E, gusts 4 mph7 km/h	56%	99%	0
Sun 8a	Cloudy	37°3° (likely 35°2° to 42°6°)	34°1°	30%, 0.03 in0.8 mm	3 mph5 km/h from E, gusts 3 mph5 km/h	56%	97%	0
Sun 9a	Cloudy	40°4° (likely 36°2° to 41°5°)	38°3°	30%, 0.03 in0.8 mm	3 mph5 km/h from E, gusts 4 mph7 km/h	55%	100%	0
Sun 10a	Cloudy	41°5° (likely 37°3° to 42°6°)	38°3°	30%, 0.03 in0.8 mm	5 mph8 km/h from E, gusts 6 mph10 km/h	62%	100%	0
Sun 11a	Cloudy	42°6° (likely 39°4° to 43°6°)	38°3°	30%, 0.03 in0.8 mm	7 mph11 km/h from E, gusts 8 mph12 km/h	65%	100%	1
Sun 12p	Cloudy	43°6° (likely 42°6° to 44°7°)	38°3°	20%	8 mph13 km/h from E, gusts 11 mph18 km/h	65%	100%	1
Sun 1p	Cloudy	44°7° (likely 42°6° to 46°8°)	38°3°	20%	10 mph16 km/h from E, gusts 15 mph25 km/h	65%	100%	1
Sun 2p	Cloudy	44°7° (likely 42°6° to 45°7°)	38°3°	20%	12 mph19 km/h from E, gusts 17 mph27 km/h	68%	100%	1
Sun 3p	Cloudy	44°7° (likely 40°4° to 45°7°)	38°3°	20%	12 mph19 km/h from E, gusts 16 mph26 km/h	68%	100%	0
Sun 4p	Cloudy	44°7° (likely 39°4° to 44°7°)	38°3°	20%	13 mph21 km/h from E, gusts 15 mph24 km/h	68%	100%	0
Sun 5p	Cloudy	43°6° (likely 38°3° to 43°6°)	36°2°	20%	13 mph21 km/h from E, gusts 15 mph24 km/h	70%	100%	0
Sun 6p	Cloudy	40°4° (likely 37°3° to 40°4°)	33°1°	80%, 0.01 in0.3 mm	12 mph19 km/h from E, gusts 14 mph23 km/h	76%	100%	0
Sun 7p	Cloudy	39°4° (likely 36°2° to 39°4°)	32°0°	80%, 0.01 in0.3 mm	12 mph19 km/h from E, gusts 14 mph23 km/h	79%	100%	0
Sun 8p	Drizzle	39°4° (likely 36°2° to 39°4°)	32°0°	80%, 0.01 in0.3 mm	10 mph16 km/h from E, gusts 14 mph22 km/h	79%	100%	0
Sun 9p	Drizzle	39°4° (likely 35°2° to 39°4°)	33°1°	80%, 0.01 in0.3 mm	9 mph14 km/h from E, gusts 15 mph24 km/h	79%	100%	0
Sun 10p	Cloudy	39°4° (likely 35°2° to 39°4°)	33°1°	80%, 0.01 in0.3 mm	9 mph14 km/h from E, gusts 16 mph25 km/h	79%	100%	0
Sun 11p	Rain	38°3° (likely 34°1° to 38°3°)	32°0°	80%, 0.01 in0.3 mm	8 mph13 km/h from E, gusts 14 mph22 km/h	79%	100%	0
Mon 12a	Rain	37°3° (likely 34°1° to 37°3°)	31°−1°	80%, 0.01 in0.3 mm	8 mph13 km/h from E, gusts 13 mph21 km/h	85%	100%	0
Mon 1a	Cloudy	37°3° (likely 34°1° to 38°3°)	31°−1°	80%, 0.01 in0.3 mm	8 mph13 km/h from E, gusts 11 mph18 km/h	82%	100%	0
Mon 2a	Cloudy	36°2° (likely 33°1° to 38°3°)	30°−1°	80%, 0.01 in0.3 mm	7 mph11 km/h from E, gusts 8 mph12 km/h	85%	99%	0
Mon 3a	Cloudy	36°2° (likely 33°1° to 37°3°)	30°−1°	80%, 0.01 in0.3 mm	7 mph11 km/h from E, gusts 9 mph14 km/h	85%	99%	0
Mon 4a	Cloudy	35°2° (likely 33°1° to 37°3°)	29°−2°	80%, 0.01 in0.3 mm	7 mph11 km/h from E, gusts 9 mph14 km/h	85%	99%	0
Mon 5a	Cloudy	35°2° (likely 33°1° to 37°3°)	29°−2°	80%, 0.01 in0.3 mm	7 mph11 km/h from E, gusts 9 mph14 km/h	85%	97%	0
Mon 6a	Cloudy	33°1° (likely 33°1° to 36°2°)	27°−3°	80%, 0.12 in3 mm	7 mph11 km/h from E, gusts 11 mph18 km/h	92%	93%	0
Mon 7a	Cloudy	33°1° (likely 32°0° to 36°2°)	27°−3°	80%, 0.12 in3 mm	7 mph11 km/h from E, gusts 11 mph17 km/h	92%	97%	0
Mon 8a	Rain	34°1° (likely 33°1° to 36°2°)	28°−2°	80%, 0.12 in3 mm	7 mph11 km/h from E, gusts 11 mph18 km/h	89%	98%	0
Mon 9a	Rain	36°2° (likely 33°1° to 36°2°)	30°−1°	80%, 0.12 in3 mm	7 mph11 km/h from E, gusts 12 mph20 km/h	85%	97%	0
Mon 10a	Rain	36°2° (likely 33°1° to 37°3°)	30°−1°	80%, 0.12 in3 mm	7 mph11 km/h from E, gusts 13 mph21 km/h	89%	98%	0
Mon 11a	Rain	37°3° (likely 33°1° to 37°3°)	31°−1°	80%, 0.12 in3 mm	8 mph13 km/h from E, gusts 13 mph20 km/h	89%	100%	0
Mon 12p	Snow	37°3° (likely 33°1° to 37°3°)	31°−1°	60%, 0.04 in1 mm	8 mph13 km/h from E, gusts 11 mph17 km/h	92%	99%	0
Mon 1p	Rain	38°3° (likely 32°0° to 38°3°)	32°0°	60%, 0.04 in1 mm	8 mph13 km/h from E, gusts 11 mph18 km/h	92%	100%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 47°8°, low 35°2°. Typical 54°12° / 32°0°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  Dry
2. Evening
  6 PM–midnight
  Cloudy, 41°5°
  Dry
3. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  Dry
Official NWS forecast
Today: Sunny. High near 47, with temperatures falling to around 44 in the afternoon. North wind around 5 mph.
Tonight: Mostly cloudy. Low around 35, with temperatures rising to around 37 overnight. Southeast wind 1 to 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
47°8°–48°9°
Low, likely
34°1°–35°2°
Typical high / low
54°12° / 32°0°
Wind
20 mph32 km/h, gusts 39 mph62 km/h
UV peak
4
Tomorrow, Oct 25. Rain. High 45°7°, low 32°0°. Typical 54°12° / 32°0°. Rain 0.03 in0.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 37°3°
  30% chance · 0.18 in4.6 mm
2. Afternoon
  noon–6 PM
  Cloudy, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Rain, 39°4°
  80% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Rain, 35°2°
  80% chance · 0.06 in1.5 mm
Official NWS forecast
Day: A chance of rain. Cloudy. High near 45, with temperatures falling to around 43 in the afternoon. East wind 2 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Night: Rain. Cloudy. Low around 32, with temperatures rising to around 35 overnight. East wind 7 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
42°6°–46°8°
Low, likely
31°−1°–37°3°
Typical high / low
54°12° / 32°0°
Wind
12 mph20 km/h, gusts 25 mph41 km/h
UV peak
1
Monday, Oct 26. Snow. High 40°4°, low 30°−1°. Typical 53°12° / 32°0°. Snow 0–3 in0–8 cm, 80% chance. Mostly agree.
1. Morning
  6 AM–noon
  Rain, 34°1°
  80% chance · 0.72 in18 mm
2. Afternoon
  noon–6 PM
  Snow, 38°3°
  60% chance · 0.4 in0.9 cm
3. Evening
  6 PM–midnight
  Fog, 30°−1°
  40% chance
4. Overnight
  midnight–6 AM
  Fog, 28°−2°
  Dry
Official NWS forecast
Day: Rain before noon, then rain and snow likely. Cloudy. High near 40, with temperatures falling to around 38 in the afternoon. East wind around 8 mph, with gusts as high as 16 mph. Chance of precipitation is 80%.
Night: Mostly cloudy. Low around 30, with temperatures rising to around 33 overnight. Southeast wind 1 to 8 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
35°2°–40°4°
Low, likely
25°−4°–33°1°
Typical high / low
53°12° / 32°0°
Wind
11 mph17 km/h, gusts 20 mph32 km/h
Tuesday, Oct 27. Mostly sunny. High 55°13°, low 36°2°. Typical 53°12° / 32°0°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 31°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 55.
Night: Mostly clear, with a low around 36.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
49°9°–58°14°
Low, likely
23°−5°–36°2°
Typical high / low
53°12° / 32°0°
Wind
25 mph39 km/h, gusts 49 mph80 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 56°13°, low 38°3°. Typical 52°11° / 31°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 56.
Night: Mostly clear, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
55°13°–57°14°
Low, likely
31°−1°–39°4°
Typical high / low
52°11° / 31°−1°
Wind
9 mph14 km/h, gusts 49 mph78 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 62°17°, low 43°6°. Typical 52°11° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 62.
Night: Mostly cloudy, with a low around 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–66°19°
Low, likely
34°1°–43°6°
Typical high / low
52°11° / 31°−1°
Wind
11 mph17 km/h, gusts 34 mph54 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 60°16°, low 41°5°. Typical 52°11° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 42°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 60.
Night: Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
46°8°–65°18°
Low, likely
34°1°–49°9°
Typical high / low
52°11° / 31°−1°
Wind
14 mph23 km/h, gusts 34 mph55 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 47°8°, low 37°3°. Typical 51°11° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 43°6°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
39°4°–56°13°
Low, likely
34°1°–39°4°
Typical high / low
51°11° / 30°−1°
Wind
15 mph25 km/h, gusts 27 mph44 km/h
UV peak
3
Sunday, Nov 1. Fog. High 45°7°, low 36°2°. Typical 51°11° / 30°−1°. Rain 0.04 in1 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 38°3°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–49°9°
Low, likely
32°0°–41°5°
Typical high / low
51°11° / 30°−1°
Wind
21 mph33 km/h, gusts 33 mph53 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 50°10°, low 37°3°. Typical 51°11° / 30°−1°. Rain 0.17 in4.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  20% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Sunny, 51°11°
  20% chance · 0.1 in2.4 mm
3. Evening
  6 PM–midnight
  Cloudy, 45°7°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
42°6°–60°16°
Low, likely
30°−1°–41°5°
Typical high / low
51°11° / 30°−1°
Wind
13 mph21 km/h, gusts 33 mph53 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 47°, low 35°.
Tomorrow
30% chance of rain, high 45°, low 32°.
Monday
75% chance of snow, high 40°, low 30°, cooling off.
Rest of week
Mostly dry, highs 45–62°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (UNR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Spearfish Creek at Spearfish

1.1 mi

Below flood stage

Level: 4.8 ft
Flow: 33 cfs

Reading from Sat 1 PM · NWS gauge page

Spearfish Creek below Spearfish

7.3 mi

Below flood stage

Level: 3306 ft

Reading from Sat 12:15 PM · NWS gauge page

Little Spearfish Creek near Lead

8.9 mi

Below flood stage

Level: 4.8 ft
Flow: 21 cfs

Reading from Sat 1 PM · NWS gauge page

Whitewood Creek at Deadwood

9.1 mi

Below flood stage

Level: 4449 ft

Reading from Sat 12:15 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 68% less heating than a typical week.

This week 51Typical 160

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 47
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 14 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 7°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

SPEARFISH · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 7°4° colder than typical.

Last 7 days vs normal

On average 2°1° warmer than normal (daily mean temperature).

−1°SunOct 18
−4°−2°MonOct 19
+12°+6°TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Mountain Plains weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 34 min; Losing 2 min 53 s a day; shortest Dec 21, 1 h 44 min less
Golden hour: 5:15–6:14 PM; Morning 7:04–8:03 AM
Blue hour: 6:14–6:25 PM; Morning 6:52–7:04 AM; first light 6:52 AM

Stars tonight? Poor

Clouds most of the night (about 71% cover).

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:36 AM · rises 4:56 PM
Full moon: Oct 25
New moon: Nov 9

Looking south from Mountain Plains. The highest point on the skyline is about 5,800 ft, 4 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.

Mountain Plains, SD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Spearfish Creek at Spearfish

Spearfish Creek below Spearfish

Little Spearfish Creek near Lead

Whitewood Creek at Deadwood

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Poor

Moon